.menu_item {
  top: 0px;
  background-color: #141933;
  color: #FFFFFF;
  transition: background-color 0.3s linear;
  font-family: Arial, Verdana, Helvetica, sans-serif;
  font-size: 18px;
  border-right: 1px solid #2f3e90;
  border-left: 1px solid #2f3e90;
}

.menu_item>a {
  top: 0px;
  background-color: #141933;
  color: #FFFFFF;
  transition: background-color 0.3s linear;
  font-family: Arial, Verdana, Helvetica, sans-serif;
  font-size: 18px;
}


.menu_item:hover, .menu_item>a:hover {
  background-color: #2f3e90;
  transition: background-color 0s linear;
}

.menu_item:hover>ul>li>a {
  top: 0px;
  background-color: #141933;
  color: #FFFFFF;
  transition: background-color 0.3s linear;
  font-family: Arial, Verdana, Helvetica, sans-serif;
  font-size: 15px;
}

.menu_item:hover>ul>li>a:hover {
  background-color: #2f3e90;
  transition: background-color 0s linear;
}


/* structure du menu */
nav ul {
	padding: 0px;
	margin: 0px;
	list-style-type: none;
}

/* définition des items de menu principal  */
nav li {
	display: inline-block;
	width: 200px;
	height: 40px;
	margin: 0px;
	padding: 0px;
	/*border-right: 1px solid #2f3e90;
	border-left: 1px solid #2f3e90;*/
	/*background-color: #000000;*/
	text-align:center;
	vertical-align: top;
	line-height:40px;
}

nav li a {
	display: block;
	text-decoration: none;
}

nav li ul {
	padding: 0px;
	margin: 0px;
	/*display: none;*/
	opacity: 0;
	
	transition: all 0.3s linear;
}

nav li:hover ul {
	padding: 0px;
	margin: 0px;
	display: block;
	list-style-type: none;
	opacity: 1;
	transition: all 0.3s linear;
}

/* définition des items des sous menus */
nav li:hover ul li, nav li ul li {
	display: inline-block;
	width: 200px;
	height: 40px;
	margin: 0px;
	padding: 0px;
	border-right: 1px solid #2f3e90;
	border-left: 1px solid #2f3e90;
	text-align:center;
	line-height:40px;
}


.menu_bloc {
  padding: 0;
  top: 0px;
  left: 0px;
  height: 100%;
  //width: 80%;
  margin:auto;
  //margin-left: 10%;
  //margin-right: 10%;
  //align: center;
}
.menu_bloc_ul {
  border-right: 1px solid #2f3e90;
  border-left: 1px solid #2f3e90;
}